Crosshead



Feb. 20, 1923.

G. E. LINTON GROSSHEAD Filed Jan. 25-) 1921 5 sheets sheet 1 G. E. LINTON Feb. 2%, 1923.

CROSSHEAD Filed Jan. 29, 1921 3 sheets-sheet 5 IHVENTQR ATTORNEY To all whom it may concern:

Patented Feb. 20, 1923.

UNITED STATES P TENroFHcE.

enonen EDWARD unron or suDBUnY, ONTARIO, CANADA.

GROSSHEAD.

Application filed. January 29, 1921. Serial No. 441,046.

Be it known that I, GEORGE E. LINToN, a citizen of the Dominion of Canada residing at Sudhury, in the District of Sudbury and Province 'of Ontario, have invented certainnew and useful Improvements in Crossheads, of which the following is a. specification. i a

This invention relatesto improvements in cross heads for use in mine shafts in which buckets are being used, an object of the inventionbeing to provide a cross head which will properly guide thebucket centrally of the shaft and prevent lateral swinging of the bucket during the raising or lowering of the same.

Further objects of the invention are to so construct the cross head that in the event of its sticking or jamming on the slides of the shafts, then the bucket will be'maintained in a proper position relatively to the cross head and the hauling rope .will sag during the continued unwinding of the hauling rope, so indicating to the operator of the hauling or winding engine that the cross head is not functioning properly, and that investigation should therefore befmade. I It is also intended to construct the cross head so that it will interlock or become dis engaged with. or from a suitable clamping member on the hauling rope, and to provide suitable stop members which will co-act with the cross head so as to maintain the same at a safe distance above the bottom of the shaft, and disengaged from th clamping member so permitting the bucket to be-lowered for filling purposes and without any possibility of the cross head everstriking or interfering with the ,operationof any miners at the bottom of the shaft.

So that my invention will be properly understood, I have illustrated a preferred embodiment of the same, which will now be described, in detail, after which the novel features will be pointed out in the appended claims.

In the accompanyingdrawings, Figure 1 Y is a sectional perspective view of a part of a mining shaft, showing the cross head engagingwith the slides,'and the bucket suspended below the cross head. a I lFigure 2 is a sectional elevation vof a small portion of the shaft showing the cross head slidablyengaging the slides andthe bucketin the process of being-raised.

Figure3 is a perspective view of one portion of the locking means which co-acts with a clamping member of the hauling rope.

Figure 4 is a perspective view of a lever which controls the operation of the locking means.

1 indicates a mine shaft lined with suitable lagging 2, and 'on diametrically opposite sides'of the shaft slides 3 are secured to thelagging.

My improved cross head 4 consists of a pair of horizontally disposed bars 5 spaced in parallelism and formed with recesses 6 in the ends thereof, The bars 5 are connected adjacent to the ends with vertical bars 7 the outermost of which extend into the inner ends of the recesses 6, and the cross head is completed by diagonal struts 8, which brace the'several' bars of the cross head. i i

The slots (3 slidably engage with the slides 3, so that the cross head is capable of being elevated and lowered within the shaft.

1 On the lower transverse bar 5 of the cross head, locking means are provided to co-act with the clamping member 9 which is adjustably mountedmon the hauling rope 10, and this locking means consists of two portionswhich are similar, so that I will only describe one ofthe same. a i

One of the said portions consists of a Plate 11 which is spaced from the bar 5 of the cross .head, but connected therewith by 'columns 12, and two columns are used on that edge of theplate adjacent to the slide 3. The opposite edge of the plate 11 is rigidly attached to the lower ends of two brackets13, the upper ends'of which are rigidly connected to the bar 5. 1 On the plate 11, brackets of suitable angle or; like shape 14, arejmounted, and a lever 15 ispivotally attached intermediate of its length to the bracket 14. The lever 15 c0I1- sists of an upper and lower plate16 and 17 attached by a web 18, and itis through this web that the pivot pin of the lever passes.

Below the plate 17, leaf springs 19 are located, and attached atone end to the plate 11, the other end bearing against the plate 17 and tendingto hold the lever 15 in a looking position. v i 0 The lever loivill be rocked under certain workingconditions and to allow this operation being performed, 1 provide a second lever 20, which is pivoted, intermediate of Hill its length to a bracket 21 which is secured to the lower face-of the plate 11 andextends downwardly therefrom.

The lever 20 may be of suitable shape, but I prefer to make the top withtwo converging fiat faces 22 and an under web 23, which strengthens the lever and provides a ,isuit.,

able member through which the pivot pin of the lever will pass. I a t This lever is connected at one end to the lever 15 bya bolt 2 which slidably passes through the plate 11, and theopposite end of the lever 20 is bifurcated as illustrated at 25 and slidably engages the slide 3. On the slide 3 I provide an adjustable stop member 26.

When the cross head 4 is being lowered, the clamping member 9 on the rope '10 will be engaged by the plate 16 of the locking members. If the cross head should jamb, or fail to'slide onthe slides 3-, the bucket would remain suspended from the clamp 9, and would not continue being lowered, and as thefhauling rope 10 was unwound from the windingengine,or other suitable lowering machinery, then the upper portion of the rope 10 would sag and so indicate to the engineman that something was wrong, and required attention.

Should the cross head i and bucketdescend in a normal manner, then as the bucket neared the bottom of the shaft, the bifurcated end 25 of the levers 20, would engage the stops 26, so thatthe levers 20 would be rocked about their fulcrum points, and this rocking motion would be transmitted through the bolts 24 to the levers 15.

As the levers 15 are rocked, the upper plates 16 become spaced apart, thus allowing the clamp 9 to pass therebetween, so that'the' bucket will continue to belowered, although the cross head 4 will have become arrested by the stop members 26, and will-be held at some distance above the bottom of the shaft. When the'bucket has been filled and is being raised, the clamp 9 will freely pass between the two plates 16 ofthe levers 15, and the clamp will now engage the under face of the lower bar 5 of the cross head 4-. As/the hauling rope is wound up, the cross head i will beelevated simultaneously with the bucket, andas soon asthe levers 20 are disengaged from thestop members-26, the springs 19 will'return the levers 15 to a normal position which the adjacent edges of the plates 16 willfh'ave slightly approached each other and be in a-locking position. I The cross head will hold the ropelO centrally within the shaft 1, and prevent lateral swaying of the rope and bucket, and the interlockingmeans carried Lythe cross head willbe i automatic lvoperated to engage or disengage-the clan-fir he'hauling rope, so

I providi'nga safety device for the cross head,

and preventing damage being done both to the shaft and to miners working therein.

I claim; i 1. A safety cross head having edge recesses designed to slidablyenga-ge the slides v on pivots perpendicularto the rope and said levers co-acting with the clamp, means for rocking the levers to disengage the clamp, and means for returning the leversto a normal position. t w

3. A safety c-ross head having edge recesses designed to slidably engage the slides of a mineshaft, and through which a hauling rope passes, a clamp adjustably mounted on the hauling rope, pivotally mounted looking levens movable onpivots perpendicular to the rope and said levers co-acting withthe clamp, 'leversfor rocking the said levers to disengage the clamp, and means for returning the first said levers to a normal locking position.

4. A safety cross head having edge recesses designed to slidably engage the slides of amine shaft, and through which a'hauling ropepasses, a clamp-on the hauling rope, pivotally'mounted levers movable on pivots perpendicular to the rope and said levers coacting withttheclamp, means for rocking thelevers to disengage the clamp, and springmeans :for returning thelevers to a normal position when the last said means are inoperative. l a '1 ,5. A safety cross-head having edge recess'es designed to slidably engage the-slides of:a mine shaft, and through which a haul ing ropepasses, a clamp on the hauling rope,

pivotally' mounted levers movable on pivots perpendicularto the rope and said levers co-acting with the clar np, pivotally mounted levers, bolts connecting the first said levers tothe second said levers, means for rocking the second said levers and means co-acting withthe first said levers tov return the same to a normal positionwhen the last said means are inoperative,

6. A safety cross head having edge re cesses designed to slidably engage the slides of amine shaft, and through which a hauling rope passes, a clamp on the haulingrope, pivotally mounted levers movable on piv 'ots perpendicular to the rope and said levers co-acting with the clamp, a second set of pivotally mounted levers operativelv connected to thefirst set, adjustable stop memhers on theslides, and means engaging with tical members holding the transverse memthe first set of levers to return the same to a normal position.

7. A safety cross head having edge re-.

cesses designed to slida'bly engage the slides of a mine shaft and through Which a hauling rope passes said slides, plates carried by the cross head, a pair of levers pivoted to the top of the plates, a pair of levers pivoted to the under sides of the plates, means for connecting the levers of each plate, the last said levers having bifurcated ends slidably engaging the slides, adjustable stops on the slides, and a clamp on the hauling rope.

8. A safety cross head consisting ofapair of transverse members havingedge recesses, slides for cooperation Withsaid recesses, verbers in spaced relation, diagonal struts between the transverse members and between the vertical membersand locking means carried by the cross head and en' bodying levers disposed in opposed relation and connected together, one set of levers ada-pted'to slidably engage the guide of the cross head, and

in the presence of two witnesses.

GEORGE EDWARD LINTON. I

lVitnesses:

I G. TAYLOR, J. FOWLER. 

